Fig. 5: Tuning superconductivity in Cs(V0.93Nb0.07)3Sb5 with pressure.

a AC magnetic susceptibility, χ under various applied hydrostatic pressures. Data is normalised between −1 and 0. b Temperature dependence of normalised superconducting muon spin depolarisation rates, σsc measured in an applied field of μ0H = 10 mT at ambient and various applied hydrostatic pressures. The superconducting gap symmetries have been determined as single nodeless s-wave (solid lines) with the exception of 0.8 GPa, which sits on the boundary between the two phases and was subsequently modelled with two s-wave gaps (dashed line). The error bars represent the standard deviation of the fit parameters.